I am new to tiling and have a project. I have framed in a 3'x7'x7' steam room/ shower combo. It has 4 mil poly vapor barrior and duro rock with the rough (mortor) side exposed. I want to tile top to bottom. I have been told to use mastic on the ceiling, and mortor for the rest. Other advise was use epoxy mortar on ceiling. Also should I also apply Redgard waterproofing. thanks for any advise. hughman

BrotherO

01-10-2009 05:26 PM

Hey Hughman, i have the same issues. I hope your message gets answered so can I go from there.
-Brother-O

angus242

01-10-2009 06:08 PM

Quote:

Originally Posted by hughman
(Post 209810)

I have been told to use mastic on the ceiling, and mortor for the rest.

:eek: Mastic is NEVER used in wet locations.

A steam shower is required to use a waterproof membrane ON ALL SIDES that is rated for proper heat exposer over the CBU.
Appropriate insulation is required behind the wall to reduce temperature variations that can lead to condensation.
I believe the poly you installed equates to a double vapor barrier and can lead to a "moisture sandwich" situation.
I'd prefer a sheet-style membrane over the CBU compared to a paint on one. http://www.noblecompany.com/Products....aspx#productshttp://www.schluter.com/8_1_kerdi.aspx

BrotherO

01-11-2009 01:19 PM

Angus, i thank you for posting a response. I am getting started and don't know which way to turn. Everyone seems to have an opinion(my plumber and my tile guy) but no one has actually ever installed steam shower. Hughman, i dont want to hijack your thread I just had to chime in. I am going to start a new thread.Thanks Angus!:)

angus242

01-11-2009 07:41 PM

Quote:

Originally Posted by BrotherO
(Post 210963)

Everyone seems to have an opinion(my plumber and my tile guy) but no one has actually ever installed steam shower.

Well what I posted is based off the TCNA handbook (tiling bible) on how to build a steam shower. If your tile guy doesn't follow the specs laid out by the TCNA, I'd consider a new tile guy. Ask him if he's familiar with TCNA method SR614-07.

Also, I forgot to mention the ceiling should be sloped 2° for condensation run-off.

BrotherO

01-11-2009 07:53 PM

1 Attachment(s)

I'll have to pass on this information. Thanks again Angus...say, where do i get one of these tiling bibles? Here is the current status of my project. As you can see I added a base pan when i should have mudded the sucker.:no:Attachment 7282